216121514 has 32 divisors (see below), whose sum is σ = 393655680. Its totient is φ = 87006528.

The previous prime is 216121513. The next prime is 216121519. The reversal of 216121514 is 415121612.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216121514.

It is not an unprimeable number, because it can be changed into a prime (216121511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7829 + ... + 22215.

It is an arithmetic number, because the mean of its divisors is an integer number (12301740).

Almost surely, 2^216121514 is an apocalyptic number.

216121514 is a deficient number, since it is larger than the sum of its proper divisors (177534166).

216121514 is a wasteful number, since it uses less digits than its factorization.

216121514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14462.

The product of its digits is 480, while the sum is 23.

The square root of 216121514 is about 14701.0718656838. The cubic root of 216121514 is about 600.1124918709.

The spelling of 216121514 in words is "two hundred sixteen million, one hundred twenty-one thousand, five hundred fourteen".